NLRP3 and diabetic retinopathy: Exosomal circ-Ehmt1 regulates retinal microvascular dysfunction through the NFIA/NLRP3 signaling pathway by inhibiting the formation of NLRP3 inflammasomes in endothelial cells to protect endothelial cells from high glucose-induced damage, which could be a therapeutic target for diabetic retinopathy (120).